Question

A large flexible balloon contains 1.5moles of a gas in a volume of 27liters. If 1.1moles of the gas are removed and the pressure and temperature do not change, what will be the new volume of the gas? Round to two significant figures.

Answer 1

Answer: V = 20. L

Explanation: Use Avogadro's Law to solve this problem using the formula V1 / n1 = V2 / n2, then derive for V2. The working equation will become V2 = V1 n2 / n1

V2 = 27 L ( 1.1 moles ) / 1.5 moles

= 19.8 L or 20. L